Powder package



Dec. 6, 1938.

L. L. SALFISBERG POWDER PACKAGE Filed Aug. 4, 1937 INI/EN TOR. @d

255/ 5a BY ATTORNEY MKB Patented Dee. aisee l i .l 2,139,040i

UNITED STATES PATENT oFFlc 2.139.040 POWDER. PACKAGE Leroy L.Saliisberg, South Orange, N. J. signor to Ivars-Lee Company, Newark, N.J.,'a corporation of Delaware Application August 4, 1937, Serialy No.151.246 3 claims. (c1. zoo-iol 'Ihis invention pertains in general topackages are essential to form a dat package when the for dispensingindividual quantities oi' iiuid comtube is iilled with a commodity, asshown in modities, such as pharmaceutical powders and Fig. 3. the like.e material I may be composed of various 'I'he principal object oi' theinvention consists' substances, such as paper. transparent regener- 5 inproviding an envelope structure for containing ated cellulose having, athermoplastic coating free iiovlring commodities such as powders andthereon, transparent thermoplastically scalable the like, and designedto avoid deleterious eiIects rubber, and the like. 'I'he sealing voi!the packagcaused by free iiowing commodities in envelope ing material,in the case of thermoplastioally .0 structures. scalable material, maybe by heatandspressura,

A still further object of the invention comwhile, in the caseoi paperand substances of this prises providing an envelope provided with guardtype, the sealing may be by adhesive or cement, members for preventingdamage to the edges of and pressure.

- the envelope. The overlapping area 2 is `further sealed be- A stillfurther object consists in producing a tween spaced transverse sealingflanges 5 and 8 15V package "of tubular envelope formation with providedat both ends oi' the tubular structure. special sealing iianges toproduce a containing 'Ihe anges I and I, extending across the packpocketand adapted to evenly distribute the age, comprise areas inwhich theopposed layers stresses caused by the contained iluxid commodity. 'ofthe material I are-iirmly bonded or cemented These and other objectswill be apparent from together. and interlocked or interdigitated by 2othe following, reference being had to the accomcrimping dies so as toform a comparatively rigid panying drawing in which like referencenumerunitary bonding formation. als designate corresponding parts and inwhich: The transverse sealing flanges 5 and 6 are of Fig. 1 is a view ofone embodiment of the packspecial contour or conguration. Generally iage of the invention, with portions thereof cut speaking, these iiangesare oi' substantially semi- 25 away to show the inner structuralarrangement; circular formation in mutually inverted forma- Fig. 2 is alongitudinal sectional view or the tions: specifically. each iiangeconsists of two package taken along the line 2-2 of Fig. 1; radii.Flange l consists of the radii Ri and Re Fig. 3 is a transversesectional view of the beginning at tangent points on the boundaries of Ipackage taken along the line 3-3 of Fig. 1; and the area. 2 andconverging into the folded. edges 30 Fig. 4 is a view of several o! thepackages 3 and 4 of the tube structure. Similarly, the depicted in Fig.1 as disposed in a packing arange 6 is formed along a line defined bythe rangement, utilizing features ot the invention. radii Re and Ra,beginningV at tangent points 'I'he present invention contemplates theproalong the boundaries of the overlapping area 2 vision ol.' acontainer structure for uids in the and likewise converging into theedges 3 and 4 of 35 vform of a package envelope having specially conthetubular structure. structed seals adapted to confine the uid withinThese radii face towards each other and tothe envelope in a manner suchas to avoid corner wards the center of the pocket 8 formed in thestresses auged by the contained uld commodity, tube Structure. ThisSpecial formation 0f the and which tend to cause an opening at the edgessealing ilange structure provides a uniform dis- 40 of the envelope. Inaccordance with the inventribution or stresses induced in the containerby tion, an envelope in the form of a tube is prothe freely ilowingilliid ,contained within the vided at opposite ends with sealing flangeshav- Docket 8 and which exerts forces against the ing inwardly lacingcircular contours. This tu- AWalls of the package structure. By virtueof buler envelope is provided with guard sheets `,such a structure. ithas been found. by experiupon opposite sides to further prevent damagementation. that powders and fluids may be safely to the edges' of theuuid containing envelope. contained without opening the edges.

Referring to the drawing in detail, a' sheet of The fie-nge i isprovided with slots 9 and Ia packaging material I le longitudinallyfolded for tearing into each of the rounded portions o1' along bothsides and the folded-over parts are the pocket I as deiined by the radiiRs and Re, brought into overlapping relation in the area 2 therebypermitting the discharge oi' the conto form a longitudinally extendingseal. This tained eemmoditl c longitudinally extending seal eiects theiorma- The flange c is sealed between two sheets of tion o! a tubularstructure having sharp longii material II and I2. Those sheets II and I2tudinal edges l and I. 'Ihe sharp edges 3 and I may be of a suitablematerial, such as pointed 55 out before in connection with the materialI. Sheets II and I2 may be separate sheets or, as shown in Fig'. 2, -asingle sheet folded over the edge of the flange 5. The sheets II and I2are sealed to, and lnterdlgitated with, the flange 5 in a transversearea I3, and comprise guard'sheets for protecting the edges of thepackage formed by the material I. The guard sheets II and I2 extendbeyond the transverse dimension of the inner envelope as represented bymarginal areas I4 and I5. The 'ends of the guard sheets II and I2 alsoextend beyond the end of the inner package as represented by themarginal area I6. n

'Ihe purpose of these guard sheets will be more readily apparent fromFig. 4, in, which several of the completed package units are shown inthe positions they would occupy when stored in a box or the like. Asshown in Fig. 4, the edges 3 and 4 of the inner envelope of any one ofthe individual package units are protected by the guard sheetsprotruding in the areas I4 and I5. Likewise the ends of the envelope areprotected not only by the sealing flanges 5 and 6, but these sealingflanges in turn are protected by the outer guard sheets II and I2.

The guard sheets may be provided with suitable indicia. For example, theguard sheet I2 may be provided with a trade-mark and/or advertisment ofthe manufacturer or seller of the contained commodity, and the guardvsheet II may be provided with instructions for the use of the containedcommodity. Various other forms of indicia, of course, may be provided asrequired.

Although a preferred form of powder package has been disclosed, it willbe recognized that various changes and equivalent structures will occurto those skilled in the art, but which will not depart from the scope ofthe invention. Therefore, no limitation is intended except as pointedout in the appended claims.

What is claimed as new and original to be secured by Letters Patent ofthe United States 1. A fluid package comprising, a wall of sheetpackaging material longitudinally folded to form parallel folded edgeswith said material sealed together in a longitudinally extending areathereby forming a tubular contour, and spaced sealing flanges providedtransversely of said tubular structure forming an inner pocket andhaving curved contours'joining the transverse and 1ongitudinal edges ofthe inner pocket of said envelope to evenly distribute the stressescaused by a contained freely flowing commodity.

2. A fluid package comprising, a first, wide sheet of packaging materialand a second, narrower sheet of packaging material, both bonded togetheralong one end, said rst sheet of material being folded over upon itselfto form longitudinal folded edges parallel with the edges of saidnarrower sheet but within the area of said second sheet so that saidsecond sheet extends beyond said edges, the folded-over parts of saidwider sheet being longitudinally sealed together in an overlapping areaparallel with said folded edges, and spaced transverse seals'fcrming aninner fluid containing pocket and having curved contours joining thelongitudinal and transverse inner -boundaries of the pocket formed insaid envelope, said second sheet acting as a guard for said foldedpocket-forming sheet.y

3. `A fluid package comprising,- a. layer of heat-l sealable sheetpackaging material folded over upon` itself to provide opposed Wallswith overlapping edges thereof longitudinally heat sealed together toform a sealing rib extending longitudinally of the package, and spacedtransverse seals across said sealing rib to retain said walls andprovide an inner fluid containing pocket, said transverse seals havingcurved contours joining the longitudinal and transverse inner boundariesof said pocket to effect an even distribution of the stresses in saidwalls (caused by the contained commodity) While retaining said sealingrib longitudinally of the package structure to further distribute thestress in said walls,

as caused by the contained commodity.

